Territoet



(No M0881.)

Patented May 1, 1888.

UNTTED STATES PATENT OFFICE,

JOHN E. BINGHAM, OF WALLA WALLA, WASHINGTON TERRITORY, AND

ED\VARD W. BINGHAM, OF PORTLAND, OREGON.

Hoasrisl-ioe.

SPECIFICATION forming part of Letters Patent No. 382,131, dated May 1, 1888.

Application led October 2G, 1887. Serial No. 253.415. (No model.)

To all whom t may concern.-

Be it known that we, JonN E. BINGHAM, of Walla Walla, in the county of Walla Walla and Territory of Washington, and EDWARD W. BINGHAM, of Portland, in the county of Multnomah and State of Oregon, haveinvented a new and useful Improvement in Sectional Horseshoes; and We do hereby declare that the following is a full and exact description thereof, referencebeinghad to the accompanying drawings, and to theV letters of reference marked thereon, making a part of this specification,

Figure 1 is a plan view of thel ground side of our improved horseshoe with one of its sec` tions detached; Fig. 2, a'plan view of the opposite or hoof side of the two separated ends of the shoe shown in Fig. 1; Fig. 3, a transverse section in line w x of Fig. 1; Fig. 4, a similar section in line y y lof Fig. 1; Fig. 5, a view in perspective of the detachedA heel-section and of the opposite Aend of the toe'section with the ground side uppermost, illustrating more clearly the formof the rulej oint by which they are united; Fig. 6, a plan view illustrating a simple modification in the joint.

Our invention relates especially to that class of sectional horseshoes which are constructed by assembling and uniting suitable toe and heel parts selected from anumber of interchangeable sections severally formed of varying dimensions and curvatures, so as to t thereby any size or shape of hoof to be shod, in manner as described in the Letters Patent granted to John E. Bingham July 27, 1886, No. 346,350, although it is adapted to all forms of s ectional or jointed horseshoes.

The object of said invention is to produce a simpler and more perfect lockjoint between the toe and `heel sections, so that .the parts may' be easily united, and when united and brought into proper position to form the shoe shall be securely locked.

It consists in the combination, as hereinafter described, with the proximate ends of heel and toe sections of the shoe, of a tongue upon the one section entering a slot in the other to form a rule-joint, whose two divisions may be tted together when the sections are opened out, and will interlock when the sections are closedin proper relation to follow the curve of the horses hoof.

In the accompanying drawings, A represents the toe-section, and B B' the heel-sections, of the shoe. section is fittedto overlap the appropriate end, O, of the toe-section, the overlapping portions being each recessed, so as to receive the thickness of the other and thereby avoid any increase of the thickness of the shoe at the joint. The overlapping ends G D are secured and prevented from sliding apart by means of a transverse pin, E, which may be secured to or made integral with either section to pass through an aperture, E', in the other and form a pivot therefor. This pin E is preferably placed near to the outer edge of the shoe, and the shoulders f g, (see Figs. 1, 2, and 4,) forming the inner walls of the recesses in the overlapping ends, are severally made to describe an arc having the axis of the pin E, or its counterpart aperture E', as its center. The radius of the arc by'which the shoulders are severally defined is made smaller than the width of the section, and at the inner end of each arc an offset is formed in the wall upon a radial line, as at h ha in thc drawings.

Where the recess for the lap-joint is made with but a single curved wall, as in Fig. 6, the radial offset h h3 therefrom extends out directly to the edge of the shoe; but, by preference, instead of bounding the recesses or recess for the lap-joint on both sections with a single curved shoulder or Wall at the inner Iend thereof, we prefer to form the inner wall for the recess G upon the toe-section A with two curved portions, ff', (see Figs. 1 and 5,) having arcs of different radii struck from the same pivotal center at E, the first, f, being connected with the second, f', by a radial offset, h', and the second, f, continued to the edge of the shoe by a similar radial offset, h.

The ends of the two Sections A Bare made to form each an exact counterpart of the wall of the recess against which they are fitted,the end C of the toe-section Abeing made to termi nate in a curve having the pivot-pin E as a center, corresponding to the curve g of the recess in the hoof side of the heel-section B, as shown in Fig, 2, and with an offset, i, corre- One end, D, of each heelu sponding to the offset -h on said section, and the end D of the heel-section B being made with two curves of different radii struck from the common centerof the pivot-hole E therein, said curves corresponding with the opposite curvesff of the recess `C on the ground side of the toesection A, as shown in Figs. l and 5, and with two offsets, h ha, corresponding to the offsets h h ou said toe-section.

Vhen the two ends C D are superimposed and pivoted upon the pin E, the radial offsets 7L and h3, h and h all simultaneously abut when the heel-section is swung around upon the pivot-pin to produce a proper shape of the shoe, as shown at the left hand in Fig. l.

The overlapping joint formed as above described is completed for the purposes of our invention by the formation of curved tongues m in the curved wall of the end of the one section to enter counterpart slots n in the wall of the recess in the end of the other section. (See Figs. l, 3, 4, and 5, and dotted lines, Figs. 2 and 6.) These tongues m m prevent the two ends from being interposed one upon the other over the pivotpin E,unless the heel section B or B' be swung out laterally from the toe-section A (see dotted lines, Fig. l) in a position transverse to the normal position of the section when fitted upon the horses foot. Vhen the heel-section is thus swung out laterally, the tongues m mare brought into posiV- tion not to interfere with the walls having the recesses therein, (see Fig. 5,) and the two ends O D may then be readily superimposed, the pivot-pin E being passed through the aperture E', so as to bring the faces of said ends in contact and the ends of the tongues m in register with the ends of the slots n. The heel-section may now be swung around upon the pin E,so as to cause the tongues m to enter the slots a, whereupon the two di-visionsof the joint become firmly locked, so as to be inseparable so long as the sections are in position to be tted or are itted upon the horses foot. rlhe entire shoe is rendered rigid and unyielding with regard to twisting strains by the tongues m and slots a, as if made in'one piece, the longitudinal separation of the parts being prevented and the joint measurably re -enforced by the pin E.

The tongues m m and slots n a are preferably formed quite closev to the inner or hoof face of the shoe, so that the shoemay be worn nearly through without weakening the rulejoint formed thereby.`

It is evident that the arrangement of the parts may be reversed, so that the toe-section shall lap the heelsection, and the tongues be formed in the toe-section A and the slots in the heelsection B; also, that the pivot-pin may project from either section through an aperture in the opposite section.

A modiflcation'of the invention is represented in Fig. 6 of the drawings, wherein the curved walls of the joint are formed upon arcs having a common center and equal radii, and with asingle tongue, m,- but in this case the extent of bearingsurface is necessarily reduced.

The formation of the overlapping joint with double curved walls ff', having arcs of different radii, aords the advantage of the Wide bearing obtained in the wide surface of the arc of greater radius without interfering with the proper location of the proximate nailholes, which would be intersected by the ends of the sections were they formed throughout upon the arcf of greater radius.

We claim as our invention- 1. rlhe combination, with the overlapping ends of the toe and heel sections of a sectional horseshoe, and with a transverse pin uniting the two, of a tongue, m, upon the one section entering a slot, a, in the opposite section to form a ruleljoint having the pin as its pivotal center, said tongue being disposed to engage its slot when the two sections are in normal position, and to be released only when the sections are lswung out at about a right angle with each other, all substantially in the inanner and for the purpose herein set forth.

2. The combination, with the overlapping ends of the toe and heel sections of a sectional horseshoe having a transverse pivot-pin uniting the two, anda terminal segmental tongue, m, `upon the one section, describing an arc having the pivotpin as its center, and adapted to enter a slot, n, in the opposite section, of a second terminal segmental tongue formed upon the same section as the first to entera counterpart slot in the opposite section, but describing an arc of greater radius, having the same pivotpin as its center to form a double rulejoint, substantially in the manner and for the purpose herein set forth. j

In testimony whereof we have signed our naines to this specification in the presence of two subscribing witnesses.

JOHN E. BINGHAM. EDWARD W. BINGHAM.

IOC 

